![](https://motoinstruction.ru/img/bmw/21/127280.jpg)
Disassembling input shaft
![](https://motoinstruction.ru/img/bmw/21/127281.jpg)
- Clamp the input shaft into a vise with soft jaws.
- Use universal puller, BMW No. 00 7 500, and pressure head (arrow) to pull off grooved ball bearing (9) with spacing washer (8).
- Note the thickness of the spacing washer.
- Remove guide ring (7).
- Compress spring cluster (4) and remove split segment washer (6).
- Remove backup washer (5), spring cluster (4), anti-rattle disc (3), thrust block (2) and constantspeed gear (1).
- Clamp input shaft (10) other way round in vise.
- Use universal puller, BMW No. 00 7 500, and pressure head (arrow) to pull off grooved ball bearing (11).
![](https://motoinstruction.ru/img/bmw/21/127282.jpg)
Assembling input shaft
- Lightly oil the bearing surface for constant-speed gear (1) on input shaft (10), and install the constant-speed gear.
- Lightly oil the splines in thrust block (2) and install it.
- Place anti-rattle disc (3) on thrust block (2).
- Mount spring cluster (4) with locating ring (arrow) facing upwards on anti-rattle disc (3).
- Install backup washer (5) of the same thickness as the original washer.
- Compress spring cluster (4) and insert the split segment washer (6) in the ring groove.
- Install retaining sleeve (7) with the shoulder over split-segment washer (6).
- Check the fully assembled length and adjust if necessary.
See below.
- Install spacing washer (8) of calculated thickness, and press on grooved ball bearing (9).
Checking travel of spring segment on input shaft
![](https://motoinstruction.ru/img/bmw/21/127283.jpg)
- Check endplay of spring cluster (4).
Caution: Replace backup washer (5) if endplay is out of tolerance.
Endplay:
- Spring cluster on shaft — 0.4...0.6 mm (0.016...0.024 in)